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I don't know why my wire network now is not stable. After a short time of using, maybe 30 minutes, 15 minutes or maybe just 2 minutes, my network is down. When my network is down, I must run this command two times:

service network-manager restart

First time, it just disconnect network. and at second time, it restarts the network and runs smoothly again. I don't know why and how to fix this. I'm using Ubuntu 13.04. Before that, I used Fedora 18, and still meet this problem.

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  • What hardware do you have? Please try and be as specific as you can (i.e. model #'s, manufacturing info, etc).
    – slm
    Apr 28, 2013 at 14:24
  • If this is a laptop: does it happen only in one location, or everywhere? (If this is a desktop, try to connect it to a different network if you can.) Please post the log lines from /var/log/syslog that appear when you start the network, and the log lines when you lose the connection. Apr 28, 2013 at 19:43
  • Cool thanks for the work around. My autocomplete didnt show network-manager, and restarting networking and doing sudo NetworkManager start wasnt helping.. Was rebooting the machine almost daily, or more often..
    – Karthik T
    Mar 1, 2014 at 4:23

1 Answer 1

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This is a know bug in Ubuntu 13.04 kernels...
See Ethernet connection not stable on Ubuntu 13.04(bug exists in 32bit and 64bit version) (kernel-bug-exists-upstream).

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